从本地复制文件到其他域的服务器 File.Copy

　　最近有个需求，需要部署代码到多台服务器上面，而本地是无法直接访问服务器的，只能通过开了80端口的网站访问，因此，在服务器上面部署了一个上传文件的服务，该服务需要复制上传后的文件到其他服务器上面，如果直接使用System.IO.File.Copy方法，会提示用户名或密码失败，因为当前上下文的凭据是应用程序池所用的凭据；

解决方法是先模拟登录，再使用System.IO.File.Copy方法，以下是核心代码：

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Security.Principal;
using System.Security.Permissions;

public class Form1
{
    [DllImport("advapi32.DLL", SetLastError = true)]
    public static extern int LogonUser(string lpszUsername, string lpszDomain, string lpszPassword, int dwLogonType, int dwLogonProvider, ref IntPtr phToken);
    private void Button1_Click(System.Object sender, System.EventArgs e)
    {
        IntPtr admin_token = default(IntPtr);
        WindowsIdentity wid_current = WindowsIdentity.GetCurrent();
        WindowsIdentity wid_admin = null;
        WindowsImpersonationContext wic = null;
        try {
            MessageBox.Show("Copying file...");
            if (LogonUser("Remote Admin name", "Remote Domain name", "Remote User Password", 9, 0, ref admin_token) != 0) {
                wid_admin = new WindowsIdentity(admin_token);
                wic = wid_admin.Impersonate();
                System.IO.File.Copy("C:\right.bmp", "\\xxx.xxx.xxx.xxx\testnew\right.bmp", true);
                MessageBox.Show("Copy succeeded");
            } else {
                MessageBox.Show("Copy Failed");
            }
        } catch (System.Exception se) {
            int ret = Marshal.GetLastWin32Error();
            MessageBox.Show(ret.ToString(), "Error code: " + ret.ToString());
            MessageBox.Show(se.Message);
        } finally {
            if (wic != null) {
                wic.Undo();
            }
        }
    }
}

以上参考来源于https://stackoverflow.com/questions/13132926/how-to-copy-folder-from-one-server-to-another-with-different-domain-using-c-shar